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Guide to searching PubMed

What is PubMed?

PubMed is NLM's search engine interface for MEDLINE, which is a database of citations and abstracts in the fields of medicine, nursing, dentistry, veterinary medicine, health care systems, and pre-clinical sciences.undefined

MEDLINE indexes approximately 30,000 biomedical journals published in the U.S. and worldwide. Coverage extends back to 1946 with over 30 million citations.

Along with MEDLINE, PubMed also provides access to:

  • PubMedCentral.   A free full-text archive of biomedical and life sciences journal articles.
  • NCBI Bookshelf.   Free online access to books and documents in life science and healthcare.
  • OLDMEDLINE.   Article citations from international biomedical journals from 1946 through 1965.
  • In-Process Citations.  Very current citations that have not yet been indexed with MeSH.

PubMed is a free resource developed and maintained by the National Center for Biotechnology Information at the National Library of Medicine®.